diff --git a/Documentation/Models/Docbook/Tcar-ug/tcar-ug.docbook b/Documentation/Models/Docbook/Tcar-ug/tcar-ug.docbook
index 424e629..db69d82 100644
--- a/Documentation/Models/Docbook/Tcar-ug/tcar-ug.docbook
+++ b/Documentation/Models/Docbook/Tcar-ug/tcar-ug.docbook
@@ -1,4 +1,4 @@
-<?xml version="1.0" ?>
+<?xml version="1.0"?>
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" []>
 <!-- 
     WARNING: Keep the preable definition as it is (in two lines). The